MESURING PRESSURE WITH ARDUINO PRESSURE SENSOR (pressure transducer)

[@liowwenan4054]

Wow, excellent work sir! Last 2 weeks I had a final-year project which required multiple pressure transducers. If I found your video earlier, the calibration for my sensors would have been much easier. But still, it can help me to improve my project's reliability. Thanks for the tips!

[@MikaelAbehsera]

Glad I could help! got any feedback on the way the video was filmed? anything you wish was done differently or better? thanks!

[@TalkieT]

I think you're lucky it worked at all without an explicitly common ground. You can power from external, but need to tie the sensor ground to the arduino ground. Looks like it was, but used the mains ground as the path

[@MikaelAbehsera]

ah, true. I will fix this for future videos but I know a lot of the time with arduino you can get away with it as i have. thanks.

[@MikaelAbehsera]

Made sure to fix this on the video I posted and gave you credit, thanks

[@thereallife9741]

thanks that fixed my problem

[@arabofon]

Exactly! That's the first thing that caught my eye.

[@ethaninfante2768]

Thank you so much! I have a similar project using the pressure transducer replacing the arduino with an ESP32 but this video was a life saver!!

[@sNEAKYnIGHTmUPPET]

I would love to compare notes with you, as I am doing a very similar thing

[@MikaelAbehsera]

Glad it helped! thanks for the feedback

[@donaldsmith8236]

Thanks, enjoyed basic over view

[@MikaelAbehsera]

Glad you enjoyed it

[@josephdaquila2479]

Can you link the video before this? Or a part of this series? Im interested in seeing how you set up the relay with the pump

[@MikaelAbehsera]

Sure there’s actually a playlist of the series, once it’s gets hot enough we can go outside and run the full system !

[@josephdaquila2479]

​@@MikaelAbehseraoooh I'll be looking forward to that!

[@meesiphht2769]

I just wonder what good a setup like this is? I would think most would use the pressure sensor for a water level setup where they would want to turn a pump on and off according to a low/high pressure instead of what you're showing.

[@MikaelAbehsera]

its up to everyone to use it as they wish, I'm just trying to learn how these things wokr and share my experiences, since no one makes videos on it

[@kinolar3210]

Thank you! I applied it to my course project

[@MikaelAbehsera]

Glad it helped! thanks for the feedback

[@timlyg]

How sensitive is the sensor say for different depth of water?

[@BorisSiber]

thx 4 sharing

[@MikaelAbehsera]

Thx 4 watching

[@Canadian_Pakistani]

it is very nice and detailed tutorial. I am using almost similar setup. I am using 12V power supply but pump is not generating sufficient pressure. The cut off pressure written pump is 80psi but I am sensing the pressure reading fluctuating between 0-5 psi only. Don't know how to get higher pressure values

[@MikaelAbehsera]

I’m pretty sure 0-5 is actually the voltage and not the psi, there’s some calculations you gotta do, did you add that part ?

[@Canadian_Pakistani]

@@MikaelAbehsera yes I have added that part too.

[@georgelza]

love this... curious... have you used that sensor to measure water level... how accurate is it over a 3-4 meter tank. 100psi =6.895 bars about 70m capable so just wondering about accuracy at a 3-4m tank

[@MikaelAbehsera]

as some have pointed out we made some mistakes in the calculations but I think its not bad accuracy, for a large 3-4 meter tank i think i would use a float sensor, or another pressure sensor, I actually have both so ill have to get those videos made soon

[@georgelza]

@@MikaelAbehsera be great if you can output the measurements to mqtt also... i currently have a ultrasonic and it's not accurate, depending on temp it builds concensation on sense causes readings to be all over the place.

[@georgelza]

got sensors on the way... input voltage 5v, output 0-3.3v can measure up to 5m water column. going to look at your code and see how to modify to fit my use case... and then need to figure out how to add the mqtt capability...

[@scrillies1234567]

(5.0/1023.0) // convert to voltage is confusing. What is 5. Is this a typo, should it be 0.5v? What is 1023?

[@MikaelAbehsera]

5 volts and the range of the analog which is 0 to 1023

[@jlaustill]

There is zero chance you were getting accurate results. I'm an engineer for a living. ADC's work by using a reference voltage and giving you a reading as a ratio to that reference. Since you were using an external power supply for the sensor, it was a different voltage than that which the arduino had as a reference. You should always get the power and ground from the ADC, which in this case would be the arduino itself so you can get an accurate reference voltage. Pressure transducers are setup to read .5 volts at their zero, which for PSIG is 0 psig, and for map sensors slash PSIA, .5 volts would be absolute vacuum, so at sea level you would be reading somewhere around .8 volts due to the 14.7 PSI of air pressure at sea level. Then 4.5 volts is the max reading of the sensor. So for your 100 PSIG sensor, all you needed to do was map the read voltage from .5 to 4.5 to 0 to 100. BUT, that only works when you use the correct reference voltage. On 3.3v systems, you map from .3 to 3 instead.

[@MikaelAbehsera]

I’ll have to test this and report back, thanks for the feedback !

[@frankysnephew]

@@MikaelAbehsera : You don't have to test anything, dude, this is pure logic. My question is, if you don't know what you are doing, WHY on earth are you trying to pretend you do? 🤔

[@SchmidtintheWorkshop]

@@frankysnephewdick comment.

[@gl897]

@frankysnephew this is unnecessary. Your comment is rude. I learnt a lot from this video, and the OP never claimed to know everything. He's open to constructive assistance. Unlike your waste of space comment.

[@MikaelAbehsera]

These videos are to figure it out with my viewers since 90% of my content is niche and no one teaches or shows the process of figuring it out

[@countrymileoffroad8523]

hello, I have a couple questions, first off I am building an HHO torch setup, I currently have it all wired up for just an off switch, but I want it to turn off/ cut power when it hits 5psi, I will be running my Arduino into this torch build so I can set the parameters as I need. my biggest problem is I need the code to enter and I don't know how to, can you help me with the majority of the code? and I will figure out the rest.

[@josephdaquila2479]

Is this rated for fluids other than water? EDIT: definitely think it will work well with fuel then! You're "hashtagging" ESP32, but you're using an arduino, so Im wondering if you just change the input voltage into the device for it to work with the ESP. 5 V down to 3.3 V? Because sensors are input devices to a microcontroller right? So the signal has to be what the device expects.

[@MikaelAbehsera]

This specific one is for cars and I think it can do gas / coolant / oil / air / water

[@MikaelAbehsera]

When you buy one check the what it can handle or it’s rating to make sure

[@josephdaquila2479]

Thank you Mikael! @@MikaelAbehsera

[@NickCruz-c5j]

Excellent video. Is your arduino code available for download somewhere? Also, what sensor model is that? I'm hoping to make a similar system of my own. Thanks!

[@MikaelAbehsera]

code no, i try to make people follow in the video so they can actually learn, and for the sensor I just got it off amazon!

[@alphanov2009]

What is the model of the pressures sensor please?

[@MikaelAbehsera]

Not sure on model but I just got it on Amazon, I’m pretty sure it’s the same as a generic car pressure sensor

[@josephdaquila2479]

Based off of this, maybe the answer to my question is yes? LOL@@MikaelAbehsera

[@blessingmaseko8620]

Did you manage to complete this project have been checking but couldn't find new videos

[@MikaelAbehsera]

had some hickups, will be continuing this winter

[@JonasSebastianBarjauMateu]

Atmospheric pressure at sea level is around 15 psi. 0 psi would be absolute vacuum.

[@PHM_Tech]

No, absolute vacuum does not have any pressure because has no air molecules, vaccum pressure is measured in negative PSI on vacuum chambers (example)

[@JonasSebastianBarjauMateu]

@@PHM_Tech Riiiiight, ty

[@PHM_Tech]

@@JonasSebastianBarjauMateu You're welcome

[@MikaelAbehsera]

yeah looking back and as some comments have pointed out I made mistakes in my calculations, I will fix going forward, thanks guys !

[@IPsYoNiXx]

What is that T fitting adapter called? Looking for one but i cant find it

[@MikaelAbehsera]

if I remember correctly the one I got was for car oil pressure, either way it wasnt the best

[@cessromer7078]

Seems the pressure sensor especifications is for high pressure field and the power must come from arduino preferible than external power also for relay and water pump. However very nice set up.

[@MikaelAbehsera]

yup, Id love to try making my own pressure sensor with a low resistance spring and some 3d printing

[@isov4345]

awesome..

[@MikaelAbehsera]

thanks

[@tonybell9201]

Can this type of sensor also be used to caculate water depth if it was submerged to a specific depth?

[@MikaelAbehsera]

i would use a water level sensor

[@hugocarrasco7734]

How would you make arduino control a vacuum sensor?

[@MikaelAbehsera]

gonna add that to the list but its probably similar

[@JonasSebastianBarjauMateu]

Atmospheric pressure at sea level is aprox 15 psi. 0 psi would be absolute vacuum.

[@MikaelAbehsera]

yup silly mistake on my end, will be sure to mention it on the final project, thanks jonas.

[@PauloAgustin-dt9mx]

will this work on omega px603 transducer. also do you have a copy of your code. Thanks

[@estebansalvatore2715]

does anyone know the name of the metal piece where he screw the pressure transducer? is it comercially available or is it custom made?

[@MikaelAbehsera]

I found this one on amazon i think as a car pressure sensor part, but its not the best honestly

[@ryanlow604]

How long is the pressure sensor last in Working environment?

[@MikaelAbehsera]

not sure, thats something we should test

[@vidotti911]

Would this work with esp32?

[@MikaelAbehsera]

yes, I try to make all my vids work on a range of microcontrollers including esp32

[@vidotti911]

Thanky you!@@MikaelAbehsera

[@camaqazi]

hey is it possible to get the code for the pressure sensor ? Thanks!

[@JOSEBENJAMINROJASREYNOSO]

Where i can find the presure sensor?

[@MikaelAbehsera]

I used a car pressure sensor off amazon

[@shravanimargaj8439]

can we get the circuit diagram

[@MikaelAbehsera]

check the video for those details

[@dileepkumarnair5998]

Durability??

[@MikaelAbehsera]

no idea, the fitting i got was not good leaked too much

[@rodwhittaker5704]

Do you have the link to the arduino code?

[@MikaelAbehsera]

was having some issues with sharing the code, can you join our discord? i can send it on there

[@i3dgearmarine908]

You have this wrong. The range of those pressure transducers if from 0.5V to 4.5V. .5V=0 psi and 4.5V=range of sensor. So you need to subtract .5 V and then divide by 4V. Any reading outside the range of .5 to 4.5 is an error. This is intentional with these transducers so you can detect a faulty sensor. Very misleading video showing people an incorrect calculation.

[@vitasartemiev]

That output range is only if input is rock solid 5v. In his example he had 0.45v at 1atm. Going by your equation we end up with negative pressure.

[@MikaelAbehsera]

yeah looking back I need to rework my whole calculations but I think the idea still gets through to the viewer, most of these videos are just figuring it out as we go since no one makes documation on these yet, will fix in the future!

[@scrillies1234567]

"very misleading" omg the guy is doing a experimental tutorial LOL

[@maximsosnovski705]

2nd

[@asulyasulya3255]

1